NEW**9MM 30 Round Steel Magazine For M11 Cobray SWD WITH 10 ROUND Polymer MAG BLOCK. These 30 round mags have a w/10 Round Mag Block installed for compliance. NEWLY Manufactured 30 Round Mag for the M-11 9mm Semi Auto and SMG guns. Steel magazine with polymer followers, Wolff Springs in a black oxide finish. Offers reliability, a great fit and durability as well for all Cobray M11 9mm models. Also, if you are looking for the perfect pouches to carry these for competition or just shooting, our SMG pouches are a perfect fit for these magazines.